Management Practices for Whitefly and Thrips in Mungbean

This experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, [23.740 N latitude and 90.350 E longitude] Sher-e-Bangla Nagar, Dhaka, Bangladesh, during the period of March to May, 2014 to study the Whitefly and Thrips pest incidence in mungbean and their management practices BARI Mung-5 was used as the test crop for this experiment. The experiment consists of the following treatments: T₁: Nitro 505EC (Chloropyrifos+Cypermethrin) @ 2 ml/L of water at 10 days interval; T₂: Casper 5 SG (Emamectin Benzoate) @ 2gm/L; T₃: Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L; T₄: Tapnor 40 EC (Dimethoate) @ 2.0 ml/L; T₅: Allion 2.5 EC (Lamda-Cyhalothrin) @; T₆: Admire 200SL (Imidachorpid) @ 0.25 ml/Land T₇: Control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The lowest number of whitefly infestation per plant in the vegetative stage (4.18) and reproductive stage (2.13) was recorded from T6 treatment, whereas the highest (14.44) and (8.10) was recorded from T₇ treatment in respective stage. Thrips infestation was higher (6.32) per 5 flower was recorded from T₇ treatment whereas lower infestation (1.88) per 10 flower was recorded from T_6. The lowest yield per hectare (1.27 ton) was found in T₇ and lowest benefit cost ratio (4.16) was found in T₅ whereas highest yield per hectare (1.53 ton) was found in T₆ and highest benefit cost ratio (12.81) was found in T₃ treatment. Among the management practices for controlling whitefly and thrips of mungbean Admire 200SL @ 0.25 ml/L of water was more effective which was followed by Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L of water Farmers should use Admire 200SL(Imidachorpid) @ 0.25 ml/L of water at 10 days interval for controlling whitefly and thrips in mungbean.